Keerthi Praveen

Anna University, Chennai

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N. Balasubramanian

Anna University, Chennai

U. Sathya

Central Leather Research Institute

M. Vanitha

Padjadjaran University

S. Vadivel

SRM Institute of Science and Technology

Karthik Kesiraju

Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology

Nithya Mahendran

Anna University, Chennai

A. Muthukrishnaraj

Amrita Vishwa Vidyapeetham

Nithya Mariappan

Anna University, Chennai

Steffy Annie Varughese

Anna University, Chennai

Nandini Chatterjee Singh

International Centre for Genetic Engineering and Biotechnology

Cooperative Institutions

Anna University, Chennai

Lovely Professional University

Bharathidasan University

American University of Sharjah

Amity University

Shoolini University

Indian Institute of Technology Kharagpur

Consejo Nacional de Investigaciones Científicas y Técnicas

Huaiyin Institute of Technology

National Institute of Technology Tiruchirappalli

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Experimental Investigation on E-Waste Concrete Using Mineral Admixtures

E3S Web of Conferences (2024)

K. Thulasirajan Keerthi Praveen D. Lokesh N. Shiva Shankar Naik Y. Sreekanth

Our reliance on electronics, a cornerstone of modern life, comes at a cost. The relentless pace of technological advancement generates mountains of discarded devices, creating the growing problem of electronic waste. This E-waste, if improperly disposed of, can contaminate landfills and release harmful materials into the environment. This study investigates a potential solution: using a portion of e-waste in place of fine aggregate. To improve overall performance, we also incorporate mineral admixtures. Our research aims to understand how both the amount of e-waste and the specific mineral admixtures used influence the final properties of the concrete. We systematically replaced the fine aggregate with e-waste at varying percentages (0%, 10%, 20%, and 30%) and meticulously analyzed the resulting effects. The study identifies 10% e-waste replacement as the optimal level for achieving desirable properties in M20 grade concrete, a commonly used strength classification. This approach offers a two-fold benefit. It tackles the e- waste crisis by providing a sustainable disposal option, and it potentially reduces the construction industry's reliance on virgin resources like natural sand, contributing to a more sustainable future.

10.1051/e3sconf/202459109008

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Development of Membrane Bioreactor Using Polyvinylidene Difluoride Composites for Textile Dyeing Wastewater Treatment

SSRN Electronic Journal (2022)

U. Sathya Keerthi Praveen

A laboratory-scale membrane bioreactor (MBR) has been developed for textile dyeing wastewater treatment using fine-tuned polyvinilidinedifluoride (PVDF) composite microfiltration membrane combined with ozonation. These composite membranes were prepared by blending PVDF with Polyetherimide (PEI) and tungsten oxide via phase inversion method. The membrane performance was evaluated by filtering pure water and real textile dyeing wastewater. The composite membrane characterisations such as morphology, water uptake, surface roughness, hydrophilicity and porosity were investigated. Contact angle measurements indicated that the hydrophilic property of the PVDF/PEI composite membranes have been increased by increasing the PEI concentration in the casting solution. The real wastewater used for the experiments were combined effluent which is dark in colour. Optimised ozonation of 5 hours was used in the pre-treatment prior to MBR. The membrane modules were fabricated as modules and submerged into the reactor, having working volume of 20L. The filtration experiments have been carried out for 15 days continuously to obtain the membrane flux. Pure water flux values have been found to increase with the modified membranes from 19LMH to 21 LMH. The hydraulic retention time of 10 hours was given. Total suspended solids were removed completely after this filtration. The overall COD and colour removal efficiency achieved were 92% and 88%.

Polyvinylidene fluoride

Textile

Difluoride

Membrane bioreactor

Textile industry

10.2139/ssrn.4120400

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Box–Behnken Design and experimental studies on novel fibrous g-C3N4 towards water splitting and degradation of indigo carmine dye

International Journal of Hydrogen Energy (2024)

K. Karthik Keerthi Praveen Neppolian Bernaurdshaw

Graphitic carbon nitride

Indigo carmine

Box–Behnken design

Degradation

Carbon nitride

10.1016/j.ijhydene.2024.01.088

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Citations (7)

pH-Controlled photocatalytic abatement of RhB by an FeWO₄/BiPO₄ p–n heterojunction under visible light irradiation

New Journal of Chemistry (2019)

Nithya Mahendran U. Sathya Keerthi Praveen

The novel FeWO₄/BiPO₄ heterojunction generates an inner electric field to promote electron–hole separation efficiency and is a proficient photocatalyst.

Visible spectrum

10.1039/c9nj04263f

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Citations (11)

Advancements in industrial wastewater treatment by integrated membrane technologies

Elsevier eBooks (2022)

U. Sathya Keerthi Praveen

Membrane Fouling

Membrane bioreactor

Wastewater Reuse

Industrial wastewater treatment

10.1016/b978-0-323-91180-1.00006-5

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Citations (2)

Assessment of Effect of Resistivity in Resistance Butt Welding of Wire Rods

2006 GSW Proceedings (2021)

Keerthi Praveen Malur N. Srinivasan

Butt welding of wire rods is an essential requirement for continuous wire drawing process.This research assesses how the knowledge of resistivity of a particular wire rod helps in selecting the welding parameters and optimizes the power to obtain a good weld.Tensile strength, cracks and porosity, inclusions, flash characteristics, length of HAZ, and martensite content of welds were determined in wire rods of two different grades of steel (with high and low resistances) welded with selected combinations of welding variables.The work was carried out in association with Gerdau Ameristeel, Beaumont (GAB) at their plant.The main observations made in this work are summarized below.In general better tensile strength is obtained when wire rods of higher resistivity are welded, while larger amount of flash to flush away inclusions, less weld cracks, smaller HAZ and lower amount of martensite in HAZ are obtained when wire rods of lower resistivity are welded.The higher resistance wire rods are better welded with the higher heat settings (in this research it was setting '2') and the lower resistance wire rods with a lower heat settings (in this research it was setting '4').When the higher and the lower resistance wire rods are welded together the voltage setting is governed by the requirement of the lower resistance wire rod.

Rod

Flash welding

10.18260/1-2-620-38579

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Fabrication and characterization of magnetite/reduced graphene oxide composite incurred from iron ore tailings for high performance application

Materials Chemistry and Physics (2015)

M. Vanitha Keerthi Praveen N. Balasubramanian

10.1016/j.matchemphys.2015.06.006

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Citations (25)

Smart Energy Management in Solar-Powered 2BHK Residential Building Based on Forecast-Driven Optimization and EV Scheduling